CN201348560Y - Baby walker and scooter dynamic testing/crash testing machine - Google Patents

Abstract

The utility model relates to a testing machine applicable to a baby walker and scooter dynamic testing/crash testing, which comprises a testing body platform and a test scooter. A supporting base is connected with aluminium profile brackets of the body platform; a linear dual guide rail is connected with a rotating shaft arranged inside the supporting base; a sliding block is matched with the linear dual guide rail in a sliding way; the upper end of an adjustable connecting rod is articulated with the sliding block, and the lower end is connected with an auxiliary clamp; the auxiliary clamp is connected with the test scooter; the test scooter is placed on an arc platform surface of the testing body platform; and a wooden wall body facing the travel of the test scooter is arranged. The testing machine is provided with an automatic control panel data processing system. The testing machine enables a test object to crash the wooden wall body by self-obtained power, which satisfies the standard regulation, and has good testing stability and reliability.

Description

Baby walker and scooter dynamic test/collision tester

Technical field:

The utility model is used to test baby walker and the dynamic impact test of scooter, can implement collision in tested perambulator motion state according to standard-required, detects baby walker and scooter collision deformation and destructiveness.The standard that relates to this equipment has contained ASTM, EN, GB, ISO, belongs to the perambulator technical field of performance test.

Technical background:

Along with China's economy is growing, child's bicycle toys export amount is also increasing, in order to ensure the exported product quality, is necessary it is detected.Baby walker and scooter need dynamically to collide the plank body of wall of front in traveling process, impact velocity υ, and υ should be 2m/s ± 0.2m/s.At home, method of testing is single, method of testing as shown in Figure 1:

Adopt rope (3) thus the traction slide block makes tested object (6) obtain impact velocity.What obvious tested object obtained only is relative velocity, does not conform to standard; And test labour intensity is big, and stable testing and reliability are all relatively poor.

The utility model content:

The purpose of this utility model with a kind of baby walker and scooter dynamic test/collision experiment machine is provided, can make tested object self obtain power collision plank body of wall, standard compliant regulation, and stable testing and reliability are all better.

For achieving the above object, design of the present utility model is:

The utility model adopts unpowered design to use energy conversion principle to realize that baby walker and scooter collide the plank body of wall of front with the speed 2m/s ± 0.2m/s of standard in traveling process dexterously.

By $\mathrm{mgh}=\frac{1}{2}{\mathrm{mv}}^2+\mathrm{\ΔE}$ (wherein mgh is a gravitional force,

Be the kinetic energy that transforms, Δ E is the part energy of loss, such as: heat energy etc.) as can be known; Speed v only need be found suitable height point just can satisfy baby walker and scooter in practical operation and be clashed into the plank body of wall with standard speed 2m/s ± 0.2m/s in traveling process by height h decision.

Physical construction comprises that mainly test platform (comprise two parts: 1, segmentation circular arc---form by the arc section that radius is bigger; 2, aluminium section bar support), collision baffle plate, adjustable connecting-rod, line slideway, rolling bearing and supporting seat, sensor stand, sensor protection baffle plate, scooter counterweight and auxiliary clamp etc.Synoptic diagram is as shown in Figure 2:

In test process, the top is rectilinear motion and the assembly that rotatablely moves, and can realize moving up and down and rotating.This mechanism has solved tested object stuck and dynamic unbalance when slippage downwards effectively.

This test platform face is at velocity test zone almost plane, so tested object can be seen moving linearly in this zone.Horizontal direction is carried out force analysis, be subjected to friction force f and connecting rod thrust F component F ' in the horizontal direction.This component is relevant with the corner dimension between velocity test zone inside connecting rod and the surface level.Because it is less that this θ changes, so can think at the even deceleration rectilinear motion of this velocity test zone work.If the 3rd sensor place speed is υ ₁, the 2nd sensor place speed is υ ₂, scooter is t through the 3rd sensor to the 2 sensor required times ₁, scooter is t through the 2nd sensor to the 1 sensor required time ₂, distance is s between the 1st sensor and the 2nd sensor, and distance is s between the 2nd sensor and the 3rd sensor, and distance can be regulated by sensing station.

According to (1) $s={\mathrm{\υ}}_1{t}_1+\frac{1}{2}{{\mathrm{at}}_1}^2;$ (2) $s={\mathrm{\υ}}_2{t}_2+\frac{1}{2}{{\mathrm{at}}_2}^2;$ (3) υ ₂=υ ₁+ at ₁Can solve the 1st instantaneous velocity υ of sensor place ₃Wherein s is determined by the position of two sensors; T can measure by 3 correlation photoelectric sensors and programmable logic controller (PLC) PLC, and its precision is higher, and is reliable and stable.

Automatically the control data disposal system is made up of two Fibre Optical Sensors, programmable logic controller (PLC) PLC and touch-screen.By touch-screen displacement s is set, thereby the timing of PLC internal clock pulse counting obtains time t, finally calculates impact velocity v.Demarcate for satisfactory height h.Control block diagram as shown in Figure 3:

By scalable adjustable connecting-rod and supporting many specifications anchor clamps, this testing machine has been realized the test of different size baby walker and scooter.

According to above-mentioned utility model design, the utility model adopts following technical proposals:

A kind of baby walker and scooter dynamic test collision tester, comprise test subject platform and tested scooter, it is characterized in that a roller bearings seat is connected by the rotating shaft in the aluminium section bar support in screw and the test subject platform, slide block and the line slideway coupling of sliding, the upper end of an adjustable connecting-rod and slide block are hinged, and the lower end connects an auxiliary clamp, auxiliary clamp is connected with tested scooter, tested scooter is shelved on the circular arc table top of test subject platform, and tested scooter stroke is provided with the plank body of wall to the place ahead.

Above-mentioned testing machine is furnished with automatic control data disposal system simultaneously, and its structure is: the 1st, the 2nd and the 3rd correlation photoelectric sensor and a touch-screen are set in the place ahead, described wood siding wall side.

The utility model and prior art have following conspicuous substantive distinguishing features and advantage to comparing: the utility model can make measurand self obtain power collision plank body of wall, the conformance with standard regulation, and stable testing and reliability are all good.

Description of drawings:

Fig. 1 is the structural representation of prior art testing machine.

Fig. 2 is the structural representation of an embodiment of the utility model.

Fig. 3 is the automatic control data disposal system structured flowchart of Fig. 2 example.

Specific implementation method:

A preferred embodiment accompanying drawings of the present utility model is as follows:

Referring to Fig. 2, this baby walker with the structure of scooter dynamic test/collision tester is: roller bearings seat 10 is connected with aluminium section bar support in the test subject platform 8 by screw, the rotating shaft 21 that the two guide rails 11 of straight line pass through to weld with in the supporting seat 10 is connected, slide block 12 slides with the two guide rails 11 of straight line and mates, can on the two guide rails 11 of straight line, move around, adjustable connecting-rod 13 upper ends and slide block 12 are hinged, and the lower end connects auxiliary clamp 9, auxiliary clamp 9 is connected with tested scooter 6, and tested scooter 6 is shelved on the circular arc table top of test subject platform 8.Tested scooter 6 stroke the place aheads are to being provided with plank body of wall 17, and in plank body of wall 17 side the place aheads the 1st, the 2nd and the 3rd correlation photoelectric sensor 14,15,16 are set.

Referring to Fig. 3, this testing machine is furnished with automatic control data disposal system, and its structure is: a programmable logic controller (PLC) 23 connects 14,15,16 and touch-screens of described the 1st, the 2nd and the 3rd correlation photoelectric sensor.When concrete operations, at first tested scooter 6 is connected with adjustable connecting-rod 13 by auxiliary clamp 9, will test counterweight 7 then and be fixed on the scooter 6.Regulate 3 pairs of correlation sensors 14,15,16 then, they all can be regulated in adjustable support 18 up and down, satisfy the needed displacement s of test.Correlation parameter in the touch-screen is set at last, moves tested scooter 6 to certain height bump plank body of wall 17 and begin test.Speed υ in the time of can drawing bump automatically through programmable logic controller (PLC) PLC 22 data processing ₃Compare stroke speed υ with standard, determine scooter 6 initial position height.

In test process, have corresponding hole on the sensor protection baffle plate 19,3 pairs of correlation sensors 14,15,16 can see through and detect measurand.Sensor protection baffle plate 19 can also prevent effectively that measurand from departing from test subject platform 8.The present invention is the gordian technique in baby walker and the scooter dynamic test crash tests process, can be with the enforcement that coacts of baby walker and scooter equipment producer or respective detection unit.

The structure that Fig. 1 illustrates the testing machine of prior art supplies contrast, wherein label:

The 1-fixed pulley, 2-plank link stopper, 3-drag rope, 4-test subject platform, 5-slide block, the tested scooter of 6-

Claims (2)

1. a baby walker and scooter dynamic test/collision tester, comprise test subject platform (8) and tested scooter (6), it is characterized in that a roller bearings seat (10) is connected by the rotating shaft (21) in the middle aluminium section bar support (20) of screw and test subject platform (8), a slide block (12) slides with line slideway (11) and mates, the upper end of an adjustable connecting-rod (13) and slide block (12) are hinged, and the lower end connects an auxiliary clamp (9), auxiliary clamp (9) is connected with tested scooter (6), tested scooter (6) is shelved on the circular arc table top of test subject platform (8), and tested scooter (6) stroke is provided with plank body of wall (17) to the place ahead.

2. baby walker according to claim 1 and scooter dynamic test/collision tester, it is characterized in that being furnished with automatic control data disposal system, the structure of described automatic control data disposal system is: in described plank body of wall (17) side the place ahead the 1st, the 2nd and the 3rd a correlation photoelectric sensor (14,15,16) and a touch-screen (23) are set.

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